I want to give advice to those who will plaster the walls of the clay-sand mortar. To produce a smoother surface you can use glass containers, for example, the 3 — liter jar. When the wall dries out a bit, need to iron it in vertical and horizontal direction, thus the Bank rotate optional. Internal corners can go smaller glass containers. L. GLINSKI, G. Sankt-Peterburg, Krasnodar Krai
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